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Table of Contents
  • Safety Information

    9
  • Operating Safety

    10
  • Service Safety

    12
  • Operator Safety while using Internal Combustion Engines

    13
  • Towing Safety

    14
  • Theory of Operation

    15
  • Introduction

    16
  • Terminology

    18
  • Electrical Testing Techniques

    22
  • Probing ECM Plugs and Pins

    23
  • ECM Background Information

    24
  • Normal Boot-up Sequence

    25
  • Display Variables and Values

    28
  • Ecm display screens—start switch in remote position

    29
  • Additional Variables Monitored by the ECM

    30
  • Voltage Display Errors

    36
  • ECM Automatic Engine Shutdown Conditions

    38
  • ECM Circuit Boards

    39
  • Control wiring numbering & colors

    40
  • Removing and Installing the ECM

    43
  • Checking Power to the ECM

    44
  • Checking Outgoing Power From the ECM

    47
  • Checking Temperature Sender

    48
  • Fuel Sender Failure and Low Fuel Fault

    50
  • Calibrating ECM Voltage Display

    51
  • Calibrating ECM AC Amperage Display

    52
  • Calibrating ECM AC Frequency Display

    53
  • Calibrating ECM DC Display

    54
  • Checking the ECM CAN BUS Circuit

    55
  • Checking the Main Circuit Breaker

    56
  • ECM Plugs and Pins

    57
  • John Deere Engines With ECU Background

    59
  • Locations of Engine Electrical Components

    60
  • Engine Electrical Components

    61
  • Checking the Fuses

    62
  • Checking the Engine Control Module (ECM)

    63
  • Checking the Emergency Stop Switch

    64
  • Checking the Starter Relay

    65
  • Checking the Starter Solenoid

    66
  • Checking the Intake Heater Relay

    67
  • Checking the Lug Door Switch

    70
  • Checking the Voltage Adjusting Rheostat

    72
  • Checking the Auxiliary Winding

    73
  • Checking the Exciter Stator

    74
  • Checking the AVR Sensing Wires

    75
  • Flashing the Generator (checking the excitation system)

    76
  • Checking Stator Windings at the Lugs

    77
  • Checking the rectifier diodes—thread-in style

    78
  • Checking the rectifier diodes—solder-in style

    79
  • Checking the Main Rotor Winding

    80
  • Checking the Exciter Rotor Winding

    81
  • Checking Stator Windings at the Voltage Selector Switch

    82
  • Tools

    83
  • Removing the Roof

    84
  • Preparing Unit for Generator Removal

    86
  • Replacing the Generator

    88
  • Removing the AVR

    90
  • Installing the AVR

    91
  • Removing the Engine

    96
  • Installing the Engine

    98
  • Replacing the Fuel Tank

    100
  • Replacing the Emergency Stop Switch (older)

    102
  • Replacing the Emergency Stop Switch (newer)

    104
  • Replacing the Diodes

    106
  • Replacing the Voltage Selector Switch (VSS)

    108
  • Engine Data

    112
  • Generator Data

    113
  • Trailer and Skid Data

    114
  • Dimensions

    115
  • Engine wiring diagram—john deere with ecu

    116
  • ECU Harness Connector

    119
  • ECU Wiring Diagram

    120
  • Technical data

    121
  • Generator Wiring Diagram

    122
  • Torque values

    128